Browse > Article
http://dx.doi.org/10.9714/psac.2014.16.2.024

Collective effect of hydrogen in argon and Mg as ambiance for the heat treatment on MgB2  

Sinha, B.B. (National Center for Nanoscience and Nanotechnology, Mumbai University)
Jang, S.H. (Korea Institute of Materials Science)
Chung, K.C. (Korea Institute of Materials Science)
Publication Information
Progress in Superconductivity and Cryogenics / v.16, no.2, 2014 , pp. 24-28 More about this Journal
Abstract
Magnesium diboride superconductor is still of considerable interest because of its appealing characteristics towards application mainly at around 20 K. Unlike Nb-based superconductors, $MgB_2$ can be operated by cryogen-free cooler which provides a cost effective alternative at low field of around 2-5 T. To explore this operating field region considerable efforts are necessary to marginally improve the superconducting properties of $MgB_2$. Under this situation, even the heat treatment environment during the synthesis is considered as an important factor. The addition of $H_2$ gas in small amount with Ar as a mixed gas during annealing has an adverse effect on the superconducting properties of $MgB_2$. It is although interesting to find that the presence of Mg vapor along with hydrogen during heat treatment results in the appreciable improvement in the flux pinning and the overall response of the critical current density for the ex-situ $MgB_2$ samples.
Keywords
Electric resistance; Magnetic fields; $MgB_2$ superconducting material; Critical current density;
Citations & Related Records
연도 인용수 순위
  • Reference
1 T. C. Shields, K. Kawano, D. Holdom, and J. S. Abell, "Microstructure and superconducting properties of hot isostatically pressed $MgB_2$," Supercond. Sci. Technol., vol. 15, pp. 202-205, 2002.   DOI   ScienceOn
2 Z. K. Liu, D. G. Schlom, Q. Li and X. X. Xi, "Thermodynamics of the Mg-B system: Implications for the deposition of $MgB_2$ thin films," J. Appl. Phys., vol. 78, pp. 3678-3680, 2001.
3 C.P. Bean, "Magnetization of hard superconductors," Phys. Rev. Lett., vol. 8, pp. 250-253, 1962.   DOI
4 M. Maeda, J. H. Kim, H. Kumakura, Y. U. Heo, Y. Zhao, Y. Nakayama, M. Rindfleisch and S. X. Dou, "Influence of hydrogen containing argon gas on the structural parameters and superconducting properties of malic acid doped $MgB_2$ wires," Scripta Materialia, vol. 64, pp. 1059-1062, 2011.   DOI   ScienceOn
5 J. M. Rowell, "The widely variable resistivity of $MgB_2$ sample," Supercond. Sci. Technol., vol. 16, pp. R17-R27, 2003.   DOI   ScienceOn
6 S. K. Chen, A. Serquis, G. Serrano, K. A. Yates, M. G. Blamire, D. Guthrie, J. Cooper,H. Wang, S. Margadonna and J. L. MacManus-Driscoll, "Structural and superconducting property variations with nominal Mg non-stoichiometry in $Mg_xB_2$ and its enhancement of upper critical field", Adv. Funct. Mater., vol. 18, pp. 113-120, 2008.   DOI   ScienceOn
7 F. C. Tarantini, H. U. Aebersold, C. Bernini, V. Braccini, C. Ferdeghini, U. Gambardella, E. Lehmann, P. Manfrinetti, Al Palenzona, I. Pallecchi, M. Vignolo, M. Putti, "Neutron irradiation on $MgB_2$," Physica C, vol. 463-465, pp. 211-215, 2007.   DOI   ScienceOn
8 B.A. Glowacki, M. Majoros, M. Vickers, J.E. Evetts, Y. Shi and I. McDougall, "Superconductivity of powder-in-tube $MgB_2$ wires," Supercond. Sci. Technol., vol. 14, pp.193-199, 2001.   DOI   ScienceOn
9 A.K. Pradhan, X.Z. Shi, M. Tokunaga, T. Tamegai, Y. Takano, K. Togano, H. Kito, H. Ihara, "Electrical transport and anisotropic superconducting properties in single crystalline and dense polycrystalline $MgB_2$," Phys. Rev. B, vol. 64, pp. 212509, 2001.   DOI   ScienceOn
10 A.K. Pradhan, X.Z. Shi, M. Tokunaga, T. Tamegai, Y. Takano, K. Togano, H. Kito, H. Ihara, "Angle-resolved magnetotransport studies in anisotropic $MgB_2$ single crystals," Phys. Rev. B, vol. 65, pp. 144513, 2002.   DOI   ScienceOn
11 S. Okuma, S. Togo, and K. Amemori, "Observation of superconductivity in thick amorphous $Mg_xB_{1-x}$ films," Phys. Rev. B, vol. 67, pp. 172508, 2003.   DOI   ScienceOn
12 J. M. Rowell, "The widely variable resistivity of $MgB_2$ samples," Supercond. Sci. Technol., vol. 16, pp. R17-R27, 2003.   DOI   ScienceOn
13 P. A. Sharma, N. Hur, Y. Horibe, C. H. Chen, B. G. Kim, S. Guha, Marta Z. Cieplak, and S-W. Cheong, "Percolative superconductivity in $Mg_{1-x}B_2$," Phys. Rev. Lett., vol. 89, pp. 167003, 2002.   DOI   ScienceOn
14 J. Nagamatsu, N. Nakagawa, T. Muranaka, Y. Zenitani, and J. Akimitsu, "Superconductivity at 39 K in magnesium diboride," Nature, vol. 410, pp. 63-64, 2001.   DOI   ScienceOn
15 P. C. Canfield, D. K. Finnemore, S. L. Bud'ko, J. E. Ostenson, G. Lapertot, C. E. Cunningham, and C. Petrovic. "Superconductivity in dense $MgB_2$ wires," Phys. Rev. Lett., vol. 86, pp. 2423-2426, 2001.   DOI   ScienceOn
16 K.H.P. Kim, J.H. Choi, C.U. Jung, P. Chowdhury, H.S. Lee, M.S. Park, H.J. Kim, J.Y. Kim, Z. Du, E.M. Choi, M.S. Kim, W.N. Kang, S.I. Lee, G.Y. Sung, J.Y. Lee, "Superconducting properties of well-shaped $MgB_2$ single crystals," Phys. Rev. B, vol. 65, pp. 100510, 2002.   DOI   ScienceOn
17 Y. Bugoslavsky, L. F. Cohen, G. K. Perkins, M. Polichetti, T. J. Tate, R. G. William, and A. D. Caplin, "Enhancement of the high magnetic field critical current density of superconducting $MgB_2$ by proton irradiation," Nature, vol. 411, pp. 561-563, 2001.   DOI   ScienceOn
18 A. Serquis, X. Z. Liao, Y. T. Zhu, J. Y. Coulter, J. Y. Huang, J. O. Willis, D. E. Peterson, F. M. Mueller, N. O. Moreno, J. D. Thompson, V. F. Nesterenko, and S. S. Indrakanti, "Influence of microstructures and crystalline defects on the superconductivity of $MgB_2$," J. Appl. Phys., vol. 92, pp. 351-356, 2002.   DOI   ScienceOn
19 D.C. Larbalestier, L. D. Cooley, M. O. Rikel, A. A. Polyanskii, J. Jiang, S. Patnaik, X. Y. Cai, D. M. Feldmann, A. Gurevich, and A. A. Squitieri, "Strongly linked current flow in polycrystalline forms of the superconductor $MgB_2$," Nature, vol. 410, pp. 186-189, 2001.   DOI   ScienceOn